update READMEs

Author: katahiromz

README.md

@@ -304,7 +304,7 @@ You have to copy the 64-bit file into another place before loading.
 - v.5.6.3 (2021.12.12)
     - Added win32-samples.
     - Added "UI Lanuage Select".
-- v.5.6.4 (20XX.YY.ZZ)
+- v.5.6.4 (2021.12.16)
     - Asking for compiling before opening GUI edit.
 
 ## Contact Us

README.txt

@@ -295,7 +295,7 @@ Question 6. Are the 64-bit files supported?
 - v.5.6.3 (2021.12.12)
     - Added win32-samples.
     - Added "UI Lanuage Select".
-- v.5.6.4 (20XX.YY.ZZ)
+- v.5.6.4 (2021.12.16)
     - Asking for compiling before opening GUI edit.
 
 /////////////////////////////////////////////////////////////////////

READMEIT.txt

@@ -295,7 +295,7 @@ Domanda 6. I file a 64 bit sono supportati?
 - v.5.6.3 (12.12.2021)
     - Added win32-samples.
     - Added "UI Lanuage Select".
-- v.5.6.4 (20XX.YY.ZZ)
+- v.5.6.4 (16.12.2021)
     - Asking for compiling before opening GUI edit.
 
 /////////////////////////////////////////////////////////////////////

READMEJP.txt

@@ -637,7 +637,7 @@
     v.5.6.3 (2021.12.12)
         win32-samplesを追加。
         「UI Lanuage Select」を追加。
-    v.5.6.4 (20XX.YY.ZZ)
+    v.5.6.4 (2021.12.16)
         GUI編集を開く前にコンパイルを尋ねる。
 
 /////////////////////////////////////////////////////

READMEKO.txt

@@ -295,7 +295,7 @@ Windows XP/2003/Vista/7/8.1/10 및 ReactOS에서 작동합니다.
 - v.5.6.3 (2021.12.12)
     - Added win32-samples.
     - Added "UI Lanuage Select".
-- v.5.6.4 (20XX.YY.ZZ)
+- v.5.6.4 (2021.12.16)
     - Asking for compiling before opening GUI edit.
 
 /////////////////////////////////////////////////////////////////////